Analysis and Design of Bi-Directional DC-DC Converter in the Extended Run Time DC UPS System Based on Fuel Cell and Supercapacitor

Zhe Zhang, Ole Cornelius Thomsen, Michael A. E. Andersen, Jacob D. Schmidt, Henning R. Nielsen

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    Abstract

    Abstract-In this paper, an extended run time DC UPS system structure with fuel cell and supercapacitor is investigated. A wide input range bi-directional dc-dc converter is described along with the phase-shift modulation scheme and phase-shift with duty cycle control, in different modes. The delivered power and peak current are analyzed and calculated. The key parameters of the bi-directional dc-dc converter, the relationships between the input voltage, phase-shift angle, ratio of the transformer and leakage inductance are analyzed and optimized. Build the system mathematic model and a novel input voltage combined with load current feedback using PI controller with anti-windup scheme to realize closed-loop control of the whole system, and verify the feasibility of the control scheme proposed by simulation. A 1kW prototype controlled by TMS320F2808 DSP is implemented and tested. Experimental results show the validity of design.
    Original languageEnglish
    Title of host publicationTwenty-Fourth Annual IEEE Applied Power Electronics Conference and Exposition, 2009. APEC 2009
    PublisherIEEE
    Publication date2009
    Pages714-719
    ISBN (Print)978-1-4244-2812-0
    DOIs
    Publication statusPublished - 2009
    Event2009 24th Annual IEEE Applied Power Electronics Conference and Exposition - Washington DC, United States
    Duration: 15 Feb 200919 Feb 2009
    Conference number: 24
    https://ieeexplore.ieee.org/document/4802615

    Conference

    Conference2009 24th Annual IEEE Applied Power Electronics Conference and Exposition
    Number24
    Country/TerritoryUnited States
    CityWashington DC
    Period15/02/200919/02/2009
    Internet address

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